Try-square.



No. 867,922 PATENTED OCT.- s, 1907.

F. B. MILLER.

TRY SQUARE. APPLIOATION FILED MAY 20, 1901.

WITNESSES.-

/ i i BY j I 4 f I Q M ATTORNEK 7n: mmms PETERS ca., WASHINGTON, 0 c.

UNITED STATES PATENT OFFICE.

FRANK B. MILLER, OF UNIONVILLE, CONNECTICUT, ASSIGNOR TO THE UNION CUTLERY &

HARDWARE COMPANY, OF UNIONVILLE, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

TRY-SQUARE Specification of Letters Patent.

Patented Oct. 8, 1907.

To all whom "it may concern:

Be it known that I, FRANK B. MILLER, a citizen of the United States, and a resident of Unionville, in the county of Hartford and State of Connecticut, have invented a new and Improved Try-Square, of which the following is a specification.

My invention relates more especially to the class of small tools used for constructing lines or surfaces at right-angles to each other, and the object of my invention is to provide a tool of this class that shall be extremely cheap in construction, neat in appearance and strong and durable, these objects being attained by constructing the square of a single piece of sheet metal.

A form of device in the use of which these objects may be attained is illustrated in the accompanying drawings, in which The figure is a perspective view of a try square embodying my invention.

In the accompanying drawings the numeral 6 denotes the blade of the try square, of proper length and width. This blade may be plain, as in some devices of this class, or may be graduated, as desired.

The stock or handle 7 is formed of the same thickness as the blade, the two, in fact, being formed of a single piece of sheet metal cut or stamped to proper shape.

Prior to my invention efforts have been made to construct a tool of this class from sheet metal, but a difficulty has heretofore been encountered in providing the stock or handle and blade from a single sheet of metal of uniform thickness and at the same time so forming the inner edge of the stock or handle with a series of projections, when the handle and blade are originally stamped to form. These projections are preferably obtained by serrating the edge, and these projections or serrations are then bent alternately in opposite directions from the blade forming a flange 8 extending equally on opposite sides of the stock or handle that is formed of the same piece of metal as the blades and in the same plane thereof. The plane of the blade thus lies in the center of this flange so that the square may be used with the blade either side up in the same manner as the old form of try square in which the stock or handle is much thicker than the blade, the latter being secured centrally to the stock depthwise thereof, thus providing the flange upon each side of the blade.

What I claim as my invention and desire to secure by Letters Patent is'.-

1. A try square formed from a single piece of metal and including a blade and stock, the latter having a flange of a single thickness of metal extending from opposite sides of the inner edge thereof and formed integrally therewith.

2. A try square including a blade and a stock formed of a single piece of sheet metal and having a flange constructed of projections of a single thickness of metal bent in opposite directions from the sides of the inner edge of the stock and formed integrally therewith.

3. A try square including a blade and a stock formed of a single piece of sheet metal, the stock having a flange formed by projections alternately bent in opposite directions from the inner edge of the stock and integral therewith.

FRANK B. MILLER.

Witnesses GEORGE E. TAFT, T. T. BUsH. 

